问题
I need to print into a text file the lines that appear in the cmd window when the batch is running. For instance, I have the following batch script:
copy D:\aaa.txt D:\bbb.txt
When I launch the batch file, the cmd window displays the following lines (sorry my Windows is in french):
D:\>copy D:\aaa.txt D:\bbb.txt
1 fichier(s) copié(s)
I would like to automatically write these 2 lines in a text file in order to check the execution of more complex batch files and to track errors.
回答1:
Redirect the output of a batch command into a file log.txt:
D:\>copy D:\aaa.txt D:\bbb.txt >log.txt
Append the output to the file
copy D:\aaa.txt D:\bbb.txt >>log.txt
Note that you might want to suppress the confirmation whether or not to overwrite the target file. Use the /Y option to do so (but be aware of the risks):
copy /Y D:\aaa.txt D:\bbb.txt >>log.txt
Also note that the issued command line is not part of the output. Write it using the echo command:
echo copy /Y D:\aaa.txt D:\bbb.txt >>log.txt
copy /Y D:\aaa.txt D:\bbb.txt >>log.txt
来源：https://stackoverflow.com/questions/33438065/windows-batch-how-to-write-cmd-output-to-a-file